Sienna Miller was accompanied by her two sexy costars, Luke Evans and Tom Hiddleston, for the Tuesday premiere of High Rise at the San Sebastian International Film Festival in Spain. The trio stunned on the red carpet, but the real highlight of the night was their cute interactions. Earlier in the day, the group attended a photocall for the film, where Sienna chose a checked Victoria Beckham dress straight from the New York Fashion Week runway. While Sienna didn't make it to NYC for the fashion fun, she did attend Monday's Burberry show during London Fashion Week. Keep reading to see more photos from the group's fun red carpet outing, then see what Luke recently told us about Emma Watson.